TWILIGHT INTENSITY AT 20 DEGREE ELEVATION. ANALYSIS AND DISCUSSION OF OBSERVATIONS, AND APPENDIX

Abstract

Details of 93 twilights are given. An attempt is made to explain these observations and hence derive information about the composition of the atmosphere at high levels. This motivation wasA DESIRE TO OBTAIN INFORMATION ABOUT STRATOSPHERIC, MESOSPHERIC AND POSSIBLY IONOSPHERIC DUST CONCENTRATIONS. Dust has been a neglected atmospheric constituent at high levels, and computations of heat balance and chemical reaction rates normally take no note of its presence. The phenomenon of noctilucent clouds must in some way be related to the aerosol problem, eit er as the direct source of material or by supplying nuclei of condensation. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1962
Accession Number
AD0286078

Entities

People

  • F.e. Volz
  • N.p. Carleton
  • R.m. Goody

Tags

DTIC Thesaurus Topics

  • Absorbers (Materials)
  • Advanced Materials
  • Atmospheres
  • Chemical Reactions
  • Clouds
  • Computations
  • Condensation
  • Elevation
  • Energy
  • Engineered Materials
  • Heat Balance
  • Heat Energy
  • Intensity
  • Materials
  • Noctilucent Clouds
  • Observation
  • Twilight

Readers

  • Aerosol Science/Aerosol Physics
  • Space/Atmospheric Physics.
  • Systems Analysis and Design

Technology Areas

  • Space